Extracts of beef (bovine) liver are a rich natural source of many vitamins and minerals, including iron.
Liver extracts are available as nutritional supplements in capsules and tablets.
As it is not an essential nutrient, no deficiency state exists.
Iron-deficiency anemia
No side effects or adverse reactions have been reported. Liver extracts should not be used by people suffering from iron-storage disorders, such as hemochromatosis. As the liver is a major filtering organ for many potentially toxic environmental chemicals, some doctors are concerned that consumption of liver extracts may result in increased intake of these chemicals. At the time of writing, there were no well-known drug interactions with liver extracts.
The recommended amount depends on the concentration, method of preparation, and quality of the liver extract.